fix(webui): align group rename dialog terminology

webui/src/components/RenameChatDialog.tsx

@@ -44,33 +44,41 @@ export function RenameChatDialog({
     <Dialog open={open} onOpenChange={(next) => {
       if (!next) onCancel();
     }}>
-      <DialogContent className="max-w-sm p-5">
+      <DialogContent className="max-w-sm rounded-[20px] p-5 sm:p-6">
         <form
-          className="grid gap-4"
+          className="grid gap-5"
           onSubmit={(event) => {
             event.preventDefault();
             if (!trimmed) return;
             onConfirm(trimmed);
           }}
         >
-          <DialogHeader className="text-left">
-            <DialogTitle>{dialogTitle ?? t("chat.renameTitle")}</DialogTitle>
-            <DialogDescription>
+          <DialogHeader className="space-y-1 text-left">
+            <DialogTitle className="text-xl leading-tight">
+              {dialogTitle ?? t("chat.renameTitle")}
+            </DialogTitle>
+            <DialogDescription className="leading-relaxed">
               {description ?? t("chat.renameDescription")}
             </DialogDescription>
           </DialogHeader>
           <Input
+            className="h-11 rounded-xl border-border/80 bg-muted/20 px-3.5 text-[15px]"
             value={value}
             onChange={(event) => setValue(event.target.value)}
             placeholder={placeholder ?? t("chat.renamePlaceholder")}
             autoFocus
             maxLength={160}
           />
-          <DialogFooter className="gap-2 sm:space-x-0">
-            <Button type="button" variant="outline" onClick={onCancel}>
+          <DialogFooter className="gap-2 pt-1 sm:space-x-0">
+            <Button
+              className="min-w-20 rounded-xl"
+              type="button"
+              variant="outline"
+              onClick={onCancel}
+            >
               {t("deleteConfirm.cancel")}
             </Button>
-            <Button type="submit" disabled={!trimmed}>
+            <Button className="min-w-20 rounded-xl" type="submit" disabled={!trimmed}>
               {t("chat.renameSave")}
             </Button>
           </DialogFooter>